Question

For what value of x is the rational expression below undefined?
x-3/3+x

Answer 1

set the denominator to 0, because dividing by 0 would give undefined.

Answer 2

If you solve for the vertical asymptote, setting the denominator = 0, you will find where your function is discontinuous or undefined. \[3+x=0 \iff x = ~?\]

Answer 3

-3?

Answer 4

That's correct